Data Sheet
March 1997
L7554 Low-Power SLIC
Description (continued)
POWER CONDITIONING & REFERENCE
DCOUT
VITR
SN
3
RECTIFIER
TXI
–
VTX
–1 V/24 mA
9.6
0.1 µF
CEXTERNAL
+
–
A = 4
PT
SPARE
OP AMP
XMT
+
RCVN
RCVP
–
+
PR
A = –4
1
B0
B1
B2
dc RESISTANCE
ADJUST
DCR
BATTERY FEED
STATE CONTROL
LOOP CLOSURE DETECTOR
+
–
LCTH
NLC
+
–
RTSP
RTSN
NRDET
RGDET
RING TRIP DETECTOR
RING GROUND
DETECTOR
ICM
12-2569 (C)
Figure 1. Functional Diagram
Lucent Technologies Inc.
3